METHOD AND INSTALLATION FOR RECOVERING HEAT FROM ASH RESIDUES Russian patent published in 2015 - IPC F23J1/02 

FIELD: heating.

SUBSTANCE: method to recover heat from ash residues produced at burning process implies the following: supply of fuel and combustion air to a fuel combustion furnace to generate heat energy producing steam or hot water in a boiler plant thus flue gases and ash residues are formed. Afterwards the ash residues are removed from the furnace, heat is recovered from the flue gases and ash residues removed from the furnace. Then the heat from the ash residues removed from the furnace is recovered into the ash residue cooling circuit and heat is transferred from the ash residue cooling circuit to the combustion air heating circuit. A heat exchanger is installed in the combustion air heating circuit for preheating of the combustion air by the heat exchanger.

EFFECT: lower costs, higher efficiency.

11 cl, 5 dwg